双荷载箱自平衡法桩基荷载试验及桩底注浆效果研究  

Load Test of Pile Foundation Pile and Analysis of Pile Bottom Pouring Effect by Double-load Box Self-balancing Method

作　　者：李来龙 LI Lailong

机构地区：[1]同济大学建筑设计研究院(集团)有限公司,上海市200092

出　　处：《城市道桥与防洪》2021年第3期155-158,M0017,共5页Urban Roads Bridges & Flood Control

摘　　要：以某大桥主墩桩基的荷载试验为例,介绍双荷载箱自平衡法桩基荷载试验的工作原理、特点,以及试验要点。根据试验结果表明,双荷载箱法在大墩位桩基试验、研究桩端注浆效果测试中具备明显的优势。该技术可以解决传统静载试验和单荷载箱试验无法解决的问题,为工程的实际应用提供了解决问题的途径,在桥梁桩基中具有广泛的应用前景。Taking the load test of the main pier pile foundation of a bridge as an example,the working principles,characteristics and test essentials of pile foundation load test by the double-load box self-balancing method are introduced.The test result shows that the double-load box method has the obvious superiorities in the test of large-pier pile foundation and the study of pile bottom pouring effect.This technology can solve the problems hard to solve by the traditional static load test and single-load box test,provide a way to solve problems for the practical engineering application,and has the wide application prospect in the pile foundation of bridge.

关 键 词：自平衡法 双荷载箱 桩底注浆 注浆效果 

分 类 号：U443.15[建筑科学—桥梁与隧道工程]